"MLD" wrote:


"John Hines" wrote in message
.. .
"Robert11" wrote:

I guess what's confusing me is the "2 stage thermostat" part.

A thermostat which has controls for the additional heater stage. This
requires additional wires in the bundle, so unless they replace the
existing wires, something else has to be done.

By 2 stage on the stat, do they, perhaps, just mean a programmable
setback
temp., or is it really that you need this type to control (properly) a 2
stage furnace such as the Trane gas, forced hot air furnace I will be
getting installed shortly.

I paid extra to get a good tstat to go with my new Lennox last fall,
with the new wire pull and all. Temp stayed right on the money all
winter.

I have a new two stage furnace running with a 1 stage thermostat. Way too
much of a job to get the extra wiring between the two units to put in a 2
stage stat. This doesn't impact the temperature holding capability of the
stat. Control of the temperature was also right on the money. Instead of the
transition between stage 1 and stage 2 being programmed by the stat it is
done via dip switches on a timed basis.

Yep, but that is the advantage of a full 2 stage install, it doesn't
have to fool around with such things.

BTW, have you compared the actual
room temp (at the stat) to the room temp reading displayed by the stat?

Yep, right on the money, all across the house. The variable speed
blower, left always on, does wonders.